Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Kelle, Udo; Prein, Gerald.- 1994. 15p.
Author(s): Blossfeld, Hans-Peter.- 1996. 43p.
Author(s): Blossfeld, Hans-Peter; Rohwer, Götz.- 1996. 37p.
Author(s): Fratczak, Ewa; Kowalska, Irena.- 1996. 106p.